Sole



FIG. 1 is a bottom front perspective view of a sole showing the claimed design;

FIG. 2 is a bottom rear perspective view thereof; and,

FIG. 3 is a bottom view thereof.

The dot-dash broken lines in the figures and the whited out areas within the dot-dash broken lines show portions of the sole and environment that form no part of the claimed design.

FIGS. 1-3 are illustrated to show a contrasting appearance. 

CLAIM The ornamental design for a sole, as shown and described. 